hello,
anyone any experience with these regulators?
https://www.pololu.com/category/133/step-up-step-down-voltage-regulators

The reason behind is that i have on 7m distance around 1-1.5V drop, so was thinking to use these devices to stabilize V (5V) per endpoint device.

Thanks

 

anyone any experience with these regulators?

No, but why is there a 1-1.5 volt drop over 7m?
Would appear a high value of current over a small gauge conductor.

 

hi @sghioto , thanks
well as i am using 5V , 1-2A devices on 7m cable which is 1mm2 (core) the drop is 1.5V, in case i use 1.5mm2 (core) its 1V

i cant have drop bc usb devices are browning, rebooting etc..

 

I would think the S13V30F5 module should work OK.
How many devices are being powered?
What is currently suppling the 5 volts?

 

@sghioto well plenty

5v
- 2x 2A
- 1A
- 1.25A

12v
- 2x 2A


6 devices total (seems like modules are req., ie almost 100 usd)

 

What are the power supplies

@sghioto well plenty

5v
- 2x 2A
- 1A
- 1.25A

12v
- 2x 2A

6 devices total (seems like modules are req., ie almost 100 usd)

I would agree!

 

@sghioto
i bought

all mean well HDR series
1x 5V (adjustable 4-6V) 6.5A
1x 12V (adjustable 10-14V) 4.5A
1x 12V adjustable 1.25A

 

@sghioto
i bought

all mean well HDR series
1x 5V (adjustable 4-6V) 6.5A
1x 12V (adjustable 10-14V) 4.5A
1x 12V adjustable 1.25A

These are the power supplies you are using currently, correct?
Anyway to install a beefier 7m power cable?
A 10 gauge two conductor cable at 7m would only drop 0.26 volts at 6.25 amps, would that work?

 

These are the power supplies you are using currently, correct?

yes, basically i wanted to get rid of all PSU from devices like Alexa, blink cam etc... so "centralize" to 3 PSUs

so it implies 10 gauge for 5V
and 10 gauge for 12V
4 cores, so its gonna be pretty thick (20mm)

dont know whats a better approach like to go that "thick" route or mess up with regulators?


@sghioto but happy for any recco.

Or in case i find extra money, is it also good with regulators? I am afraid of the heat from these devices ie regulators.

 

Bc these convertors might in total consume around 70w, so no idea about the heat.

 

so it implies 10 gauge for 5V
and 10 gauge for 12V
4 cores, so its gonna be pretty thick (20mm)

How are you figuring 20mm?
A 10 gauge wire is 2.59mm in diameter.
A 14 gauge cable would more then sufficient for 12 volts at 4 amps. Drop of only 0.42 volts.
Another thought, since the Mean Well supplies are adjustable why not adjust the output voltage to compensate for the drop?

 

@sghioto well that was ma innitial though to buy psu that u can increase voltage as a compensation for a drop. But drop happens under load so u can't send 6v to 5v usb device as u can damage it, same with 12v devices.

Thx

 

@sghioto well that was ma innitial though to buy psu that u can increase voltage as a compensation for a drop. But drop happens under load so u can't send 6v to 5v usb device as u can damage it, same with 12v devices.

Thx

What exactly are these devices at 5 and 12volts.

 

Multiple media devices

Vero4k
Fire cube
Blink camera
Switch
Etc

I bought 6mm2 cables for 5v
4mm2 cable for 12v branch, each 7m long

 

I bought 6mm2 cables for 5v
4mm2 cable for 12v branch, each 7m long

The 6mm2 cable would drop 0.26v at 6.5 amps on the 5 volt line.
The 4mm2 cable would drop 0.24v at 4 amps on the 12 volt line.
Would those voltage drops be acceptable at full load?

 

hello,
anyone any experience with these regulators?
https://www.pololu.com/category/133/step-up-step-down-voltage-regulators

The reason behind is that i have on 7m distance around 1-1.5V drop, so was thinking to use these devices to stabilize V (5V) per endpoint device.

Thanks

Did you purchase it from pololu directly? I mean, there are some knock-offs in the market.

 

The 6mm2 cable would drop 0.26v at 6.5 amps on the 5 volt line.

I believe so?
5.2v at psu, with drop full load 4.94v
Acceptable for all 5v devices?

The 4mm2 cable would drop 0.24v at 4 amps on the 12 volt line.

Also 12.15
Ie 11.9v i believe acceptable?


Let me know

THx

 

Did you purchase it from pololu directly? I mean, there are some knock-offs in the market.

Yeah i want to buy directly from their official distributor.

 

I believe so?
5.2v at psu, with drop full load 4.94v
Acceptable for all 5v devices?
Also 12.15
Ie 11.9v i believe acceptable?
Let me know

THx

I would agree those values acceptable on both 5 and 12 volt devices

 

Thanks @sghioto